The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 31, 2007
Filed:
Jun. 30, 2004
Applicant:
Kenneth W. Fernald, Austin, TX (US);
Inventor:
Kenneth W. Fernald, Austin, TX (US);
Assignee:
Silicon Labs CP, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A circuit for protecting a battery includes an n-well formed within a p substrate. A p-type resistor is formed with in the n well and has a connection to the battery. An n+ ring is also formed in the n well and substantially surrounds the p-type resistor.